Hii Roger, have u been to the MAPUG website? There is an excellent and simple procedure for aligning forks and tube to attain orthogonality @
http://www.mapug-astronomy.net/Astro...ent/OTA-1.html
I used this method to realign a very early LX200 8" that only had provision for a single star alignment in its software. Pointing accuracy excellent after following this method. All the best Mark